Apparatus for surfacing paper



Nov. 5, 1929. J. M. w. KITCHEN Y 1,734,297

APPARATUS FOR SURFACING PAPER Filed Jun' so, 1924 INVENTOR Patented Nov. 5, 1929 L'UNITED STATES- PATENT OFFICE Josnrn mosns WARD xii-carat, or EAST onarmn, new JERSEY ABBARATUS- ron suarncme PAPER Application filed June 80, 1192;. Serial No. 723,3?9.

The object of the invention isto enable the much as speed in drying the paper is a deaim of my invention protected b my Patent sideratum, I prefer to re-surface the paper No. 1,124,650, of May 1, 19 17, to be practicalupon a traveling endless wire-web of considly applied. erable length, so that a longer time for dry The aim of the present invention is the ing is taken than on a revolving cylinder. product claimed in, the cited patent, andhav- Thls extended drying surface is also more mg the same purpose, which was securing a economical of power than in running the more eflicient cleansing of moisture and efl'ete paper on the web in contact with drying cyl- 'mattersdrom-the skin. In carrying out that inders-in the ordinary methods of drying object, I aim to form on'the surface of toilet paper tissues. The wire-web used, has a spepapers, ridges, dams, bosses and concavities cial surface such as gives the paper its dethat will act inscraping, holding and removsigned changed form of surface.- Avery ing adherent m tters from the skin and eflicient form may be secured by merely mold- I which increases the moisture absorptive ing the moistened paper upon an ordinary 15 power of; as well as to prevent the'distensible interwoven wire cloth-web having wire of 55 stretching that is usual in crimped papers. selected gauge, and mesh interstices between This distensible stretching I prevent by h'avthe interwoven wires of selected size. 4 ing smooth surface lines of paper running A preferred embodimentof the invention in cross directions on one level but have iris shown in the accompanying drawings, in 1 20 regularities of surface, molded intqthe inwhich Fig. 1 schematically illustrates 1n verterstices of the non-stretchable surface lines. tical' side view an apparatus for surfacing y aim is to produce a paper that is more paper. Fig. 2 is a plan view of one end of the soft, flexible, and more eflicient in cleansing apparatus. Fig. 3 is a special form of comand in absorbing moisture than ordinary pressing couch roll, drawn on a larger scale. 5 smooth calendered tissue paper, and be more Fig. 4 are washers that are used in building '75 1 economical and sanitary in use. p up the surface of the couch roll. Fig. 5 is 'In evolving the present method and apa side view of the wire web used in the aparatus, I find that it is desirable to 'manuparatus, havinga layer of'paper resting on acture a basic paper as a separate proce s, the upper surface of the web. Fig. 6 rep re- 30 such as ordinary calendered, smooth, dry, sents a vertical side cut'of the paper, having so I hard surfaced tissue. a surface formed on the wire-. web, and Fig.

In the ordinary toilet tissue 01 0131191 7 is a fragment of the produced paper; paper the new surface character required 1n dicating 'its surface arrangement of form, accomplishing the aim of this invention, the both as to ridges and depressions.

basic p p must be fi i y-mo s e ed to The reference characters indicate as fol- 85 enable'the surface to, be molded into the delows: A and B are two drum-rollers. on

- sired form in being smoothed out and imwhich the wireswebwruns. C are paper in-.

pressed into the concavities in the siirfaces drawing rollers. Dis awater tank. E is a that would give the paper the desired ch ng water distributer. F is a water supplyvalve.

$0 ineharacter. 1T0 retain the changed form of G are water distributing rollers, and H is surface, it is necessary to more or less dry the a squeeze-impressing roll. I are paper re- I paper after wetting it and before it is retentlon rolls for holding the paper in place moved from the surface that is-given the while drying. J are wire-web support ng paper its new form of surface. The desired rolls. K and are steam pipes for heating 6 form may be engraved or otherwise formed the air for drying the paper on the web. M on th surface of a revolving cylinder having is an idler for taking up the slack of the depressions into which the moistened, so wire-web. N is a Slldlllg we1ght for the tened parts of the paper may be impressed idler. Q are pressure-producmg weights. P

" byfispecial forms of couch rolls having elastic, are cross ridge lines. Fig. 7 shows the paper or other impressing surfaces. But inas- .surface off the web. 1 Zare the drum shafts ice I that are afiixed to the enclosing box which encloses the apparatus and conveys the heated air to the paper on the web.. R are arms of pressure levers which press the rolls a ainst the drum A. Fig 3 is the squeeze-roll drawn on a larger scale. I H'- are flanges which hold the elements of the squeeze roll in tight apposition. T are felt washers and U are cardboard washers, which when intervened and drawn together by the flanges, H, produce a desirable compressing surface for impressing the moistened paper into the concavities of the wire-web W. .V is a motor. X is a drive belt connecting the motor 'with iznd operating the drum B. Y is a drive-puley. I p

In carrying out the method, the dry basic. paper is run onto the wire-web at the point where it is caught and drawn against the web on the drum A and held in place by the rolls C. The paper is wet with water drawn from the elevated tank D, and is dripped or sprayed thru small spray nozzles E or other means. The amount of water needed to be applied, is controlled by the valve E. The water may be sprayedor dripped onto the wet rolls G, which distribute the water on and commence to-impress the paper into the concavities of the wire-web W. -The complete impression of the moistened paper into the interstices of the wire-web is effected by the squeeze-roll H. A number of rolls of A each kind may be used effectively in securing the new surface.

The paper is dried in its travel to the drum roll B from which the oil' and reeled in the ordinary Way; and is later out up into strips and sheets, and packed in rolls in-the ordinary way.

7 do not confine myself to the particular apparatus or method shown and described in the present application.

It will be obvious that moist paper can be taken directly from the paper making machine and given its embossment by ordinary embossing rolls, and then transferred onto and held in place on a long drying web; but for making a. tissue paper having an unbroken substance of the tissue, a considerable such as also'be obvious that various minor amount of water must be used in moistening the paper before it is molded into the surface that will give it. a permanent form. Paper can be given the form of a wire-web used in this invention, with very little or added moisture; but there is a usual probabilit of the tissue of. the paper being broken. n preparing a paper for merely drying hands and face, such breakage of the tissue is not objectionable; and in such cases, the paper can be impressed with ordinaryv hard embossing rolls that are constructed with the features necessary in ca-rrying'out the aim of my Patent No. 1,124,650. It'will modifications of structure in the apparatus demoistened paper desirable, a soft squeeze-impressing-roll isv but in some surfacing, a hard be used. It, isto be undernecessary squeeze roll can stood that the drums androllers of the apparatus on which the wire cloth Web is run are coveredwith some. soft material, such as felt cloth, in which the interwoven wire work will restwithout injury to the web, which is preferably made with tin coated flexible wire of such gauge and openness of mesh as will give the entire web suflicient flexibility to be curvedaround the end drums of the apparatus. Preferably, the small rolls 0, G, ered, so as to exert a retaining pressure on the web ofv the moistened and dried.

What I claim as new is: 1 1. Apparatus for surfacing paper herein described, which consists "of means for moistening a dry basic paper in running the paper on an endless wire-web, said wire-iweb, means for spreading the surfaceof and molding the into irregularities in the surface of the wire-web," said irregularities in the surface of the wire-web, said means comprisinga pressure roll having a soft elastic molding and pressure surface adjustable to the irregularities in the surface of the wire-web, and means 'for drying the im pressed, and molded paper while on the wireholding rolls, paper wetting and'water spreading means for wetting the paper, moisture and impressing rolls, a finishing compression soft surfaced roll, paper retainmg rolls running in connection with the supporting rolls, and means for applying heat to paper on the web until the, paper is suffici'ently dried to be removed from the web.

the surfaces of I and J I are felt cov 3. Appa'ratusfor surfacing paper herein described, which comprises an endless wireweb running on revolving drum rollers, said drum rollers,'means for running a drypaper tissue onto the wire-web,"means for water moistening the paper, the moisteningwater over the surface of the paper 'on the w re-web, means for impressing the moistened paper into irregularities of surface of the wire-web, means for drying the paper while on the wire-web, andmeans for removing the paper. from the wire-web after the paper has been dried.

- 4. Apparatus for embossing paper herein described, which consists of means for moismeans for spreading tening the paper uniformly over the surface of the paper and for definitely controlling the amount of moisture applied to the paper, means for embossing the paper and drying the embossed paper on a traveling web, said traveling web, said means comprising means for maintaining the web in a substantially horizontal plane during the travel of the web and for maintaining a determined tension of the web, and means for drying the paper by heatig air.

5. Apparatus for surfacing paper comprising means for moistening the paper and compressing the moistened paper into the ir regularities of a fixed form of surface, said fixed form of surface having irregularities of form, and means for drying the paper While it retains the irregularities of surface form.

6. Apparatus for embossing a smooth surfaced paper with raised ridges running at right angles to each other, and forming depressions on the interspaces between the ridges, said apparatus comprising a hard receptive impressing surface and a cooperating soft impressing roll, and means for controlling the moisture and the heat of the paper during the functioning of the apparatus.

7. Means for surfacing paper which comprises means for moistening the paper, means comprising a hard embossing surface, a soft impressing roll, and a continually traveling web for holding the moistened compressed paper and means for heating and drying the paper while on the web.

8. Apparatus for giving a smooth paper surface indented lines running at right angles to each other on both sides of the paper, :aid apparatus comprising a hard surface cont iining elevations and depressions, a soft imp.'essing roll adapting itself to the hard surface, means for automatically controlling pressure of the impressing roll against the hard surface, and means for moistening and drying the paper.

9. Apparatus for surfacing paper comprising a web having running parallel with the width of the paper, and indentations and elevations running at right angles to the first named indentations, a pressure roll for pressing the paper into the indentations of the web, and means for exerting a regulated pressure on and against the first named features under an automatically acting variable pressure, said apparatus producing embossed indentations and ridges on both sides of the paper running at right angles to each other. I

10. Apparatus for embossing paper comprising a travelling web means for moistening the paper and feeding the paper between feedindrawing rolls in compressed contact with the paper, means for molding the moistened paper into depressions, and means for indentations and elevations ions and ridges running at right angles to each other, means formoistening a continually fed sheet of paper into the embossing structure of the apparatus, and means for drying with heated air the embossed moistenedpaper at the same rate of travel as that of the feeding of the paper.

12. Means comprising a travelling web for giving quadrilateral bosses to paper with depressed lines running at right angles to each other and between the bosses, said means comprising means for moistening the paper before forming the bosses, means for forming the bosses and means for completely drying the paper after the formation of'the bosses without loss of form in the bosses.

13. Apparatus for giving irregularities of surface to paper which comprises a plurality of rolls, an indented surface, means for impressing the paper into the irregularities, a supporting traveling drying web, and means for retaining the paper on the web during the drying of the paper.

JOSEPH MOSES WARD KITCHEN. 

